JPH1021972A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform wire branching and connecting work safely and easily in a short time by eliminating danger which may result in an electric shock accident. SOLUTION: A device comprises a contact 1 of a metal plate, and a main body 2 of synthetic resin, and the contact 1 is formed in such a structure that the contact 1 has two cut parts formed at a specified interval D to get in contact with energization lines 33 to be energized as insulation envelopes 31 and insulation inner envelopes 32 of both VVF cables 3, 3' are cut. The main body 2 is provided with two main body component bodies 2a, 2b of half-parted form provided with two parallel grooves 21, 22 formed at a specified interval E for both VVF cables 3, 3' to be inserted, and an insertion hole 23 for the contact 1, and connected to each other by a folding part 24 on one side to be freely folded to be fitted with each other at fitting parts 20a, 20b on the other side, and two cover bodies 26, 26 extended outward from folding parts 25, connected to them, provided with hook parts 27 on the tip side, and connected to be freely folded to the main body component bodies 2a, 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a single (not a fine twisted wire) energizing wire generally used as a power line, which is insulated and coated, and is arranged in parallel. The present invention relates to a connector which is used for wiring a VVF cable or connecting another VVF cable to an already-wired existing wiring to obtain a branch line.

[0002]

2. Description of the Related Art It is often necessary to connect such a VVF cable to another VVF cable to obtain a branch line. In the case of such a branch wiring, if the main line is a consolidation line, after turning off the power to eliminate the danger, generally, as shown in FIG. Then, the respective outer coatings 31 are removed to take out the positive-electrode-side coating wire and the negative-electrode-side coating wire, respectively. Further, the respective inner coatings 32 are removed to expose the conducting wires 33. Similarly, for the VVF cable 3 ′ on the branch side, the outer covering 31 and the inner covering 32 on the positive electrode side and the negative electrode side are removed to expose the energizing line 33, and the energizing line 33 on the main live line and the branch side are connected. Are inserted into the metal sleeve 5 provided inside the closed end insulating cap 51, and the metal sleeve 5 is pressurized and deformed under pressure by a pressing tool from above. I was connected.

As another means, a VVF cable is taken out of the energizing line as described above, these are divided into a positive electrode side and a negative electrode side, respectively, and the energizing lines are twisted and connected with a tool. Alternatively, a method has also been used in which a copper sleeve is placed on them and crimped and connected, and an insulating tape is wound around each surface to cover them.

[0004]

However, in these conventional means, the outer conductor and inner skin of the VVF cable must be removed to expose the energizing wires, and then the electrical connection between the energizing wires must be performed. In the case of wires, it is necessary to stop the power supply before the branching work because of the necessity of electric shock prevention, and during that time a power outage state is inevitable, and the work is very troublesome Therefore, there is a problem that the construction time is long and the work efficiency is poor.

[0005] Therefore, in order to fundamentally solve the above-mentioned conventional problems, the present invention omits the VVF cable branch connection work without performing the complicated work of removing the insulation coating. It is another object of the present invention to provide a connector which can safely and easily perform a branch connection operation of an electric wire in a short time by eliminating a risk of an electric shock accident.

[0006]

Means for Solving the Problems The structure of the connector according to the present invention, which has been adopted to achieve the object, will be described using the reference numerals used in the description of the embodiments. A connector used for connecting and branching a two-core VVF cable 3 ', comprising a contact 1 made of a metal plate having a high electrical conductivity and a main body 2 made of a synthetic resin having a high insulating property. Both VVF
Two notches 11, 1 for cutting the insulating outer cover 31 and the insulating inner cover 32 of the cables 3 and 3 'and making electrical contact with the conducting wire 33.
1 are formed at a predetermined interval D,
The main body 2 is formed with two parallel grooves 2 formed at a predetermined interval E through which the two VVF cables 3 and 3 ′ are inserted.
The two main body components 2a of the half-split type, which are provided with the insertion holes 23 of the contacts 1 and 22 and are connected so as to be freely foldable by the fold portion 24 on one side and fitted by the fitting portions 20a and 20b on the other side. , 2b and these two main body components 2a, 2b
The main body component 2 includes hook portions 27, 27 extending outward from the folded portions 25, 25 connected to
a, 2b and two cover bodies 26, 26 foldably connected to each other,
2 are formed to have substantially the same width as the width w on the narrow side of the two VVF cables 3 and 3 '.
b Grooves 21, 21, 22, 22, in a folded position
22 are formed so as to have substantially the same width as the width W of the two VVF cables 3 and 3 ′ on the side of the conducting wires in parallel, and the distance E between the two grooves 21 and 22 and the contact 1 The configuration is such that the interval D between the two cuts 11 is substantially equal to the interval D.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In implementing a connector having such a configuration, the two grooves 21 and 22 are formed so as to pass through the entire width of the main body components 2a and 2b, respectively. By projecting the VVF cable 3 ′ from the insertion groove 22 on both sides, the cable 3 ′ protruding on both sides may be configured as a branch line to obtain two branch lines. It is assumed that a shielding wall 28 is formed at one end of the groove 22 to be inserted, and a cut end of the VVF cable 3 ′ on the branch side is applied to the shielding wall 28 so as to protrude only in one direction, thereby forming one groove. Only the branch line can be obtained.

The contact 1 is preferably made of a material having a higher hardness and a higher conductivity than soft copper used for the current-carrying wire of the VVF cable 3, such as a hard copper alloy plate having a high hardness. . The contact 1 is not limited to one flat plate, but may be used for connection of one line, for example, connection of a line on the positive electrode side. The shape is not limited to a flat plate, but may be a U-shape or a U-shape in a side view.
In short, it suffices that two notches 11, 11 that are in electrical contact with the conducting wire 33 are formed at two places on the flat plate portion at an interval D corresponding to the interval between the two VVF cables. .

The cut interval (slit interval) of the cut portion 11 is determined by pressing the contact 1 against the VVF cable 3 so that the outer coating (outer skin) 31 and the inner coating (endothelium) 32 of the cable are torn. Since the energization line 33 is energized on the inner surface facing the portion 11, the width is preferably slightly smaller than the thickness of the energization line 33. In this manner, it is preferable that the energizing wire 33 be firmly pressed and clamped from both sides while plastically deforming the energizing wire 33 by the pressing force during the energizing operation.

Further, the thickness (plate thickness) of the contact 1 and the interval between the cuts 11 are set so that the contact area is equal to or larger than the cross-sectional area of the conducting wire 33 in the state of contact with the conducting wire 33. It is good to keep. Needless to say, when two or more contacts 1 are used to connect one of the wires, the sum of the contact areas of all the used sheets should be equal to or larger than the cross-sectional area of the conducting wire 33. By doing so, the electrical resistance of the contact portion between the contact 1 and the conducting wire 33 can be kept low, accidents such as heat generation can be prevented, and a connector that can be used safely can be obtained. it can.

[0011]

1 to 9 are views showing a first embodiment of a connector. FIG. 1 shows the inner shape of a connector and VVF.
FIG. 2 is a perspective view showing the shape of the outer surface of the connector and contacts, FIG. 3 is a perspective view of the outer surface showing the state where the contacts are mounted, and FIG. 4 is a state where the cable is inserted into the connector. 5, FIG. 5 is a perspective view showing a state in which the connectors are relatively fitted, FIG. 6 is a perspective view showing a state in which contacts are press-fitted, and FIG. 7 is a perspective view showing a state in which the connectors are attached to a cable. 8 is an explanatory diagram showing a connection state between a contact and a cable inside the connector,
FIG. 9 is an external view showing a state when the connector is used.

The contact 1 shown in this embodiment is a flat plate formed by press-forming a brass plate having high electrical conductivity and a hardness higher than the hardness of the VVF cable 3, 3 'to be used.
As shown in FIG. 2, two U-shaped cut portions 11 are formed at a predetermined interval D. The lower end portion is formed in a V-shape like a cutting blade. The cutting blade cuts the outer skin 31 and the inner skin 32 of the VVF cables 3 and 3 ′, and reaches the inner conducting wire 33. Are pressed and deformed from both sides while being pressed. The thinner contact 1 has the advantage that it can be easily mounted since a thinner one does not require a strong force for press-fitting, but a certain thickness is required to obtain a predetermined strength. The thickness is selected in consideration of the width of the cut portion 11 as follows, and is usually about 0.4 to 0.8 mm.

The thickness of the contact 1 and the cut 1
The width of 1 is set by calculation such that the area of the portion in contact with the energizing wires 3 and 3 'by pressure welding is substantially equal to or larger than the cross-sectional area of the energizing wire. Now, looking at two types of diameters of the conducting wire to be used, 1.6 mm and 2.0 mm, when the conducting wire diameter is 1.6 mm, the contact 1
Is 0.5 mm, the width of the cut portion 11 may be about 1.2 mm. If the thickness of the contact 1 is 0.6 mm when the diameter of the conducting wire is 2.0 mm, the width of the cut portion 11 may be about 1.5 mm.

The connector main body 2 is integrally formed of a resin material such as nylon, polyethylene or polypropylene. The connector main body 2 includes two main body components 2a and 2b of substantially the same shape and two cover bodies 26,
26, and each of the main body components 2a, 2
b, two grooves 21 and 22 for inserting and fitting the two-core VVF cable 3 on the consolidation side (branched side) and the two-core VVF cable 3 ′ for branching are separated by a predetermined interval E. It is formed in parallel, is provided with an insertion hole 23 for the contact 1, is foldably connected at one side by a foldable portion 24, and has a structure in which the other side is fitted to each other by fitting portions 20 a and 20 b. The bodies 26, 26 extend outward from the folded portions 25, 25 that are connected to the other sides of the two main body components 2a, 2b, and include hook portions 27, 27 on the distal end side. , 2b so as to be freely foldable.

The width of each of the grooves 21 and 22 is substantially the same as the width w of the narrow side of each of the two VVF cables 3 and 3 '. The facing width (the sum of the depths of the opposed grooves) of the grooves 21, 21, 22, and 22 in the folded position in which the main body components 2a and 2b are fitted to each other is determined by the respective VVF.
The widths of the cables 3 and 3 'are substantially the same as the width W of the power supply line parallel side (wide side), and are formed to have a width that allows the cables to be sandwiched without gaps. These two grooves 2
The interval between the center lines 1 and 22, that is, the interval E between the center lines, is formed to be substantially equal to the interval between the two cut portions 11, 11, that is, the interval D between the center lines. Also,
As shown in FIGS. 3 and 5, the insertion hole 23 for inserting the contact 1 is formed in a size suitable for inserting the lower half of the contact 1 and temporarily holding the same.

The folded portion 24 between the two main body components 2a and 2b and the folded portions 25 and 25 between the two cover members 26 and 26 and the main body components 2a and 2b are formed in a W-shape in side view. The lower bottom part is formed thin. Thus, contact 1 is, as seen in FIG.
The lower half is inserted into the respective insertion holes 23, 23 of the main body components 2a, 2b and temporarily held.

The connector in this embodiment is a
A connector for obtaining only one branch line from the VF cable 3, wherein the configuration is such that a shielding wall for closing the groove at one end of the grooves 22, 22 on the side through which the branch-side VVF cable 3 ′ is inserted. 28, 28, and the VV on the branch side
The cut end of the F cable 3 'is applied to the shielding wall 28 so that it can protrude only in one direction.

In order to branch an electric wire using the connector configured as described above, the two-core VVF cable 3 on the wired side (branch side / branched line side) is covered without any processing. In the state, as shown in FIG. 4, either one of the main body components 2a and 2b (here, 2a)
5 is inserted into the groove 21 so that the cross section thereof is in a vertical posture, and the two-core VVF cable 3 ′ for branching is inserted into the adjacent groove 22 with the cut end face of the cable 3 ′ abutting the shielding plate 28, and then as shown in FIG. As described above, the other component (here, 2b) is folded from the folded portion 24, placed on the folded portion, and pressed.
On the other side, the fitting portions 20a and 20b are fitted to each other.

Next, as shown in FIG. 6, the upper end surface of the contact 1 is pressed by a pressing tool so that the contact 1 is pushed into the contact insertion hole 23 so that the contact 1 is entirely buried. , Body structure 2
The outer surface of the contact 1 is folded by folding from the folded portion 25 connected to the a and 2b, and the hook portions 27 formed on the respective distal end sides are engaged with the engaging portions 27a formed on the main body components 2a and 2b. To engage and connect.

As shown schematically in FIG. 8, the pressurized contact 1 cuts the outer sheath 31 and inner skin 32 of the cables 3 and 3 ′ inside the connector body 2 to form the inner conducting wires 33 and 3. 33 and makes electrical contact. The appearance of such a connector is as shown in FIG.

FIGS. 10 and 11 show the second embodiment, in which the contact 1 has an inverted U-shape in side view, has two contact flat plates, and forms a connector body 2. This is a structure in which two contact insertion holes 23, 23 are formed on the main body components 2a, 2b, respectively. In this embodiment, the contact insertion holes 23 are provided with a recess 23a into which the connecting bottom portion 12 of the U-shaped contact 1 is fitted. Other points are the same as those in the first embodiment.

FIGS. 12 to 14 show the structure of another embodiment of the contact 1. Each of the contacts 1 shown in FIG. 12 has an upper part immersed in a molten resin to which an insulating resin is adhered. The contact 1 shown in FIG.
FIG. 14 shows a contact 1 having an adhesive resin sheet 14 made of an insulating material adhered to the upper surface of the connecting bottom portion 12. It is what was worn.

When the inverted U-shaped contact 1 is formed, the contact 1 can be manufactured by coating a metal plate of a contact forming material with an insulating layer in advance, and then molding it into a predetermined shape. . Further, the metal plate used as the material may be any material having higher hardness and relatively lower electric resistance than the conducting wire of the VVF cable 3, 3 ', that is, a material having excellent conductivity, other than a copper alloy plate. Can be used.

FIGS. 15 and 16 show a third embodiment. In this embodiment, the connector 2 is provided with a VVF on the bundled line side.
Two branch lines are obtained from the cable 3, and the two grooves 21 and 22 shown in the first embodiment are penetrated through the entire width of the main body components 2a and 2b, respectively. By projecting the VVF cable 3 'on the branch side outward from both sides of the insertion groove 22, the two protruding lines of the cable 3' protruding on both sides are used as branch lines to obtain two branch lines. Things.
The connector according to the present invention can also be implemented in this manner.

Although the embodiments and modifications which are considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments and modifications, and the present invention is not limited thereto. The present invention has the structural requirements, achieves the object of the present invention, and can be appropriately modified and implemented within a range having the following effects.

[0026]

According to the connector of the present invention, the width of the two grooves formed in the connector main body is substantially the same as the width w on the narrow side of the VVF cable to be used. Are formed so that the opposing widths of the opposing grooves in the fitted state are substantially the same as the width W of the VVF cable on the side of the conduction line, respectively, the interval E between the two grooves and the two cut portions of the contact. Is formed so as to substantially coincide with the distance D, and the contact only needs to have a simple two notches, and the operation of simply press-fitting this contact into the VVF cable can be performed. This has a remarkable effect that a branch line can be branched without interrupting energization even if it is a constriction line.

The contact can cut the insulating sheath and the insulating inner skin of the VVF cable only by press-fitting, and can make direct contact with the inner conducting wire to complete the branching of the branch line. Since it is not necessary, even if the branch line on the main line where the branch line is to be obtained is a branch line, the branch line can be branched without breaking the power supply without interrupting the energization. This has the effect that the branching operation can be performed very quickly in any state and from any part of the main line.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an inner surface side of a main body showing a first embodiment.

FIG. 2 is a perspective view of a main body rear side of FIG. 1 before a contact is mounted.

FIG. 3 is a perspective view of the back side of the main body of FIG. 1;

FIG. 4 is a perspective view of a state where a cable is inserted into the groove of FIG. 1;

FIG. 5 is a perspective view of the cable fitting state of FIG. 4;

FIG. 6 is a perspective view of the contact press-fit state of FIG. 5;

FIG. 7 is a perspective view of a state in which the cable installation of FIG. 6 is completed.

8 is an explanatory perspective view of the inside of the connector of FIG. 7;

FIG. 9 is a perspective view showing a state where the assembly of the connector is completed.

FIG. 10 is a perspective view of a portion corresponding to FIG. 2 showing a second embodiment.

FIG. 11 is a perspective view of a portion corresponding to FIG. 3 in FIG. 10;

FIG. 12 is a perspective view of another embodiment of the contact.

FIG. 13 is a perspective view of another embodiment of the contact.

FIG. 14 is a perspective view of another embodiment of the contact.

FIG. 15 is a perspective view of a portion corresponding to FIG. 1 of the third embodiment.

FIG. 16 is a perspective view of a portion corresponding to FIG. 4 in FIG. 15;

FIG. 17 is an explanatory perspective view showing a conventional branch line forming means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Contact 11 Notch part 2 Main body 2a Main body structure 2b Main body structure 20a Fitting part 20b Fitting part 21 Groove 22 Groove 23 Contact insertion hole 24 Folding part 25 Folding part 26 Cover body 27 Hook part 28 Shielding plate 3 Hot side VVF cable 3 'Branch-side VVF cable 31 Insulation sheath 32 Insulation endothelium 33 Conducting wire D Notch spacing E Groove spacing W Width of parallel conducting wire w Width of narrow conducting wire

Claims (2)

[Claims] 1. A two-core VVF cable (2) for branching from a two-core VVF cable (3).
A connector used for connecting and branching a core VVF cable (3 '), which consists of a metal plate contact (1) with high conductivity and a body (2) of synthetic resin with high insulation. , The contact (1) is the two VVF cables (3), (3 ')
Cuts the insulating outer skin (31) and the insulating inner skin (32) of the above, and the two cuts (11) and (11) that make electrical contact with the conducting wire (33) are at a predetermined interval.
(D) and the main body (2)
Are two parallel grooves (21) and (22) formed at a predetermined interval (E) through which the two VVF cables (3) and (3 ') are inserted.
And an insertion hole (23) for the contact (1), and are foldably connected at one side of the folding part (24) and are connected to the other side of the fitting part (2).
0a) and (20b), the two main body components (2
a), (2b) and the folded portions (25), (25) connected to these two main body components (2a), (2b) extend outward and extend toward the distal end side with the hook portions (27), (27). ) And main body components (2a), (2b)
Covers that are foldably connected to each other
(26) and (26), wherein the two grooves (21) and (22) are formed to have substantially the same widths w as the narrow sides w of the two VVF cables (3) and (3 '). The facing width of the grooves (21), (21), (22) and (22) in the folded position of the two main body components (2a) and (2b) is equal to the width of the two VVF cables (3) and (3 ′). ) Are formed so as to have substantially the same widths as the width W of the current-carrying line parallel side, and the interval (E) between these two grooves (21) and (22) and the two cuts ( A connector which is formed at an interval substantially matching the interval (D) between 11) and (11). 2. A two-core VVF cable (3) for branching
A connector used for connecting and branching a core VVF cable (3 '), which consists of a metal plate contact (1) with high conductivity and a body (2) of synthetic resin with high insulation. , The contact (1) is the two VVF cables (3), (3 ')
Cuts the insulating outer skin (31) and the insulating inner skin (32) of the above, and the two cuts (11) and (11) that make electrical contact with the conducting wire (33) are at a predetermined interval.
(D) and the main body (2)
Are two parallel grooves (21) and (22) formed at a predetermined interval (E) through which the two VVF cables (3) and (3 ') are inserted.
And an insertion hole (23) for the contact (1), and are foldably connected at one side of the folding part (24) and are connected to the other side of the fitting part (2).
0a) and (20b), the two main body components (2
a), (2b) and the folded portions (25), (25) connected to these two main body components (2a), (2b) extend outward and extend toward the distal end side with the hook portions (27), (27). ) And main body components (2a), (2b)
Covers that are foldably connected to each other
(26) and (26), wherein the two grooves (21) and (22) are formed to have substantially the same widths w as the narrow sides w of the two VVF cables (3) and (3 '). The facing width of the grooves (21), (21), (22) and (22) in the folded position of the two main body components (2a) and (2b) is equal to the width of the two VVF cables (3) and (3 ′). ) Are formed so as to have substantially the same widths as the width W of the current-carrying line parallel side, and the interval (E) between these two grooves (21) and (22) and the two cuts ( The interval (D) between (11) and (11) is substantially equal to the interval (D), and the two-core VVF cable (3 ′) on the branch side is inserted through the two grooves (21) and (22). Groove (22)
Has a shielding wall (28) on one end side.